Method of tinting wares



UNITED STATES PATENT OFFICE.

AROHIBALD IV. PAULL, OF WHEELING, EST VIRGINIA.

METHOD OF TINTING WARES.

SPECIFICATION forming part of Letters Patent No. 560,067, dated May 12,1896. Application filed September 14, 1894. Serial No. 522,995. (Nospecimens.)

To all whom it may concern:

Be it known that I, ARCHIBALD W. PAULL, of lVheeling, in the county ofOhio and State of IVest Virginia, have invented a new and usefulImprovement in the Method of Tinting, of which the following is a full,clear, and exact description.

My invention relates to the tinting of various wares, and moreespecially to the colorin g of lamp-shades and similar articles.Heretofore costly skilled labor had to be employed in this art, sincethe even spreading of the oil to which the powdered color was appliedwas a diflicult matter and has hitherto always been carried out bypainting the oil upon the article, which was placed upon a revolvingstand. This brushing; of the oil upon the article does not give an evencoating, and for finer articles a further step of stippling is necessaryin order to spread the oil more evenly. Both of these steps demandconsiderable manual skill, since the coating of oil must be even anduniform to give a uniform tint throughout from the color dusted on.

To overcome these difficulties, I have devised the present method, whichI will now describe, so that those skilled in the art to which itappertains may work the same.

I first take a heavy sticky oil, such as heavy boiled linseed-oil, andmix a small quantity of this with a liquid which will rapidly evaporatewhen exposed to the air, such as benzene or ether, preferably in aboutthe proportion of one-half an ounce of heavy oil to sixteen ounces ofbenzene. The mixing of these two liquids gives a bath into which thearticle to be tinted is dipped, forming an even thin layer thereonsuitable for the reception of the coloring material. The dipping intothe solutions heretofore used was not possible, as the liquid would runupon the surface after taking out, whereas With my improved mixture thebenzene dries so rapidly that the thick sticky oil is retained in placeand a perfectly uniform layer of oil obtained.

The advantages of my invention are apparent, since the use ofhighly-skilled labor is done away with and a better result obtained thanwas formerly possible.

Many changes may be made in the proportion of the oil and thequickly-evaporating liquid without departure from my invention, sinceWVhat I claim is The method of tinting consisting in dipping an articlein a bath, composed of a small quantity of a heavy oil mixed with aliquid of such a character that when removed the liquid will evaporatefrom the surface of the article so rapidly as to prevent the running ofthe mixture upon its surface, removing the article from the bath andallowing the liquid to evaporate, thus leaving a uniform layer of theheavy oil upon the article, and then applying the powdered color to thisuniform layer of oil; substantially as described.

In testimony whereof I have hereunto set my hand.

ARCHIBALD IV. PAULL. YVitnesses:

W. B. GoRWIN, C. BvRNEs.

